import axios from 'axios';
import {MessageBox, Message} from 'element-ui';
import store from '@/store';
import {getToken} from '@/utils/auth';

// create an axios instance
const service = axios.create ({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 50000, // request timeout
});

// request拦截器
service.interceptors.request.use (
  config => {
    // do something before request is sent
    if (store.getters.token) {
      // let each request carry token
      // ['authorization'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['authorization'] = "Bearer " + getToken ();
    }
    return config;
  },
  error => {
    // do something with request error
    console.log (error); // for debug
    return Promise.reject (error);
  }
);

// 响应拦截器
service.interceptors.response.use (
  response => {
    const res = response;
    // console.log (res);
    // if the custom status is not 200, it is judged as an error.
    if (res.status !== 200) {
      Message ({
        message: res.message || '错误',
        type: 'error',
        duration: 5 * 1000,
      });

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm (
          'You have been logged out, you can cancel to stay on this page, or log in again',
          'Confirm logout',
          {
            confirmButtonText: 'Re-Login',
            cancelButtonText: 'Cancel',
            type: 'warning',
          }
        ).then (() => {
          store.dispatch ('user/resetToken').then (() => {
            location.reload ();
          });
        });
      }
      return Promise.reject (new Error (res.message || 'Error'));
    } else {
      return res;
    }
  },
  error => {
    console.log ('err' + error); // for debug
    Message ({
      message: error.message,
      type: 'error',
      duration: 5 * 1000,
    });
    return Promise.reject (error);
  }
);

export default service;
